The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The paper suggests a power traction converter for battery electrical vehicles (BEV) based on a modular multilevel topology integrated with supercapacitor energy storage system (ESS). The relevant contribution is given by the integration of a control method for mitigating the ac voltage fluctuation at low speed operation, with an energy management control strategy. Some numerical simulations referring...
The paper presents power converter architectures for ultra-fast charging of road electric vehicles with the integration of distributed energy storage systems, which work as energy buffer between the grid and the electric vehicle in recharge. The study is introduced by an overview of the main issues related to the charging infrastructures in terms of electric vehicles charging times and their impact...
This paper deals with special transformer connections for mitigating the current and voltage unbalances generated by single-phase AC traction loads, as typically occurs for electric high speed railway loads supplied by the three phase power system. In fact they represent one of the main sources of power quality perturbation of the grid, with consequent denigration of its performance. The current unbalance...
The present paper deals with the energy management of stationary Li-Ion Capacitor energy storage (LC-ESS) applied in DC electrified mass transit systems. These transportation systems can benefit substantially from wayside energy storage devices for the recuperation of the kinetic energy during brakings and the limitation of supply currents during motoring. The proposed control evaluates analytically...
A great interest in the last years has been paid in the literature to the application of supercapacitors in many existing or innovative systems. Bidirectional dc-dc converters chopper are intrinsic candidates to couple the supercapacitor devices to electric power systems. It might be very useful to adopt coupled-inductor configurations for increasing efficiency against high-voltage step-up ratio....
The improvement of the energy efficiency is a key issue for electrified railway systems in order to reach an increased competitiveness compared to other transportation technologies in terms of both costs and environmental pollution. An important step towards this direction has been made with the increasing development of storage technologies. The installation of stationary or on-board storage technologies,...
Erythropoeitin is the most important factor in the regulation of erythropoeisis. This study aimed to evaluate the efficacy of rhuESF for patients undergoing plastic surgical procedures during which notable blood loss is expected (reduction mammoplasty in cases of macromastia and abdominoplasty obese patients) to improve the full blood count and reduce the need for transfusion. The levels of hemoglobin...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.